Target assignment projectile

ABSTRACT

A projectile includes an ordnance portion configured to impact a target and a communication apparatus positioned rearward of the ordnance portion. The projectile is configured to rotate about and travel along a longitudinal axis after launch.

RELATED APPLICATIONS

This application is a Conversion Application of and claims priority to U.S. Provisional Patent Application 60/______ , filed Sep. 27, 2003, and entitled “Target Assignment Projectile”.

TECHNICAL FIELD

This disclosure generally relates to projectiles and, more particularly, to communicating projectiles.

BACKGROUND

It is often desirable to remotely monitor people and places. This monitoring activity was traditionally accomplished by planting a “bug”, such that the “bug” is a covert microphone or video camera, for example. Unfortunately, this activity requires that a person (e.g., a spy, a soldier, or a detective, for example) enter the place that they wish to monitor so that the “bug” can be planted. Naturally, there are risks associated with such a procedure.

Further, the use of smart munitions (e.g., laser-guided missiles and bombs, for example) have greatly increased the accuracy of munitions. Typically, the target is illuminated (i.e., designated or “painted”) using a laser source, and the laser-guided weapon uses that laser light painting the target as a homing beacon. Unfortunately, in order to illuminate a target, a laser must be aimed at and maintained on the target until the missile/bomb strikes the target. Again, this requires one or more soldiers to be in harm's way prior to and during the bombing mission.

SUMMARY OF THE DISCLOSURE

According to an aspect of this disclosure, a projectile includes an ordnance portion configured to impact a target, and a communication apparatus positioned rearward of the ordnance portion. The projectile is configured to rotate about and travel along a longitudinal axis after launch.

One or more of the following features may also be included. The ordnance portion may include a bullet or a grenade. The ordnance portion may be configured to partially penetrate a target such that at least a portion of the communication apparatus is remotely visible. The ordnance portion may be constructed of an energy absorbing material, such as: thermoplastic; or a soft metal. The energy absorbing material may encase a penetration device. The penetration device may be constructed of a material chosen from the group consisting of: a ceramic material (e.g., silicon carbide); a carbon fiber material; and a hard metal (e.g., tungsten). The penetration device may be a threaded penetration device configured to attach the projectile to sheet metal.

One or more deployable fins may extend after leaving a barrel from which the projectile is launched. The projectile may include one or more range-limiting fins. A sabot may encase the projectile at the time the projectile is launched.

A power supply may provide energy to at least the communication apparatus. The power supply may include a use detection apparatus for activating the power supply after the occurrence of a use event. The use event may be chosen from the group consisting of: a launch event, and an impact event. The power supply may be an electrochemical battery pack that generates electrical energy due to an electrochemical reaction between at least two components, and the use detection apparatus may include a membrane that separates the at least two components until the occurrence of the use event.

The battery pack may be a zinc air (Zn/O₂) battery pack, the at least two components may include zinc, carbon and air; and the membrane may separate the zinc and carbon from the air.

The battery pack may be a lead acid (Pb/H₂SO₄) battery pack; the at least two components may include lead, lead oxide and sulfuric acid; and the membrane may separate the lead and lead oxide from the sulfuric acid.

The battery pack may be an alkaline battery pack; the at least two components may include zinc, manganese dioxide and potassium hydroxide; and the membrane may separate the zinc and the manganese dioxide from the potassium hydroxide.

The communication apparatus may include a reception device for receiving energy from a remote source. The energy received may be RF energy, and the reception device may include an antenna. The energy received may be infrared energy, and the reception device may include a photoreceptor. The energy received may include an encoded data signal configured to energize at least a portion of the communication apparatus. The energized portion of the communication apparatus may include a transmission device for transmitting energy to a remote receiver.

The communication apparatus may include a transmission device for transmitting energy to a remote receiver. The transmitted energy may be RF energy, and the transmission device may include an antenna. The transmitted energy may be infrared energy, and the transmission device may include one or more light emitting diode.

The transmission apparatus may further include a lens assembly for refracting the infrared energy transmitted from the one or more light emitting diodes. The lens assembly may be a convex lens assembly or a concave mirror assembly.

The one or more light emitting diodes may include a plurality of light emitting diodes, the transmission device may further include a driver circuit for sequentially exciting each of the one or more light emitting diodes.

The transmission apparatus may include a lens assembly configured to: project the infrared energy transmitted from a first of the plurality of light emitting diodes at a first radial angle, and project the infrared energy transmitted from a second of the plurality of light emitting diodes at a second radial angle. The transmission apparatus may include a lens assembly configured to: project the infrared energy transmitted from a first of the plurality of light emitting diodes at a first longitudinal angle, and project the infrared energy transmitted from a second of the plurality of light emitting diodes at a second longitudinal angle. The transmission apparatus may include a lens assembly configured to: project the infrared energy transmitted from a first of the plurality of light emitting diodes at a first longitudinal angle and a first radial angle, and project the infrared energy transmitted from a second of the plurality of light emitting diodes at a second longitudinal angle and a second radial angle.

The communication apparatus may be a passive communication apparatus, such as a retroreflector.

The communication apparatus may be an active communication apparatus. The active communication apparatus may be configured to substantially withstand the acceleration associated with launching the projectile from a launcher and the deceleration associated with the projectile striking the target. The active communication apparatus may include one or more surface mount electronic components mounted on a shock-resistant system board. One or more interconnections may electrically couple a plurality of electronic components internal to the projectile, such that at least one interconnection is configured to allow a limited amount of relative movement between the plurality of electronic components. The active communication apparatus may include a system board for mounting one or more electronic components, such that the system board is positioned within a plane that may be essentially orthogonal to the longitudinal axis of the projectile. The communication apparatus may include an essentially planar mounting structure that is essentially orthogonal to the longitudinal axis of the projectile, such that the essentially planar mounting structure is configured to receive a system board containing one or more electronic components. An exterior surface of the projectile may be configured to engage an interior surface of a barrel from which the projectile is launched. The interior surface of the barrel may include spiral rifling that engages the exterior surface of the projectile and rotates the projectile about the longitudinal axis after launch.

According to another aspect of this disclosure, a projectile includes a communication apparatus including a transmission device for transmitting energy to a remote receiver. An ordnance portion is positioned forward of the communication apparatus and configured to partially penetrate a target such that at least a portion of the communication apparatus is remotely visible. The projectile is configured to rotate about and travel along a longitudinal axis after launch.

According to another aspect of this disclosure, a projectile includes a communication apparatus including a transmission device for transmitting energy to a remote receiver. A receiving device receives energy from a remote transmitter, and an ordnance portion is positioned forward of the communication apparatus and configured to partially penetrate a target such that at least a portion of the communication apparatus is remotely visible. The projectile is configured to rotate about and travel along a longitudinal axis after launch. One or more interconnections electrically couple a plurality of electronic components internal to the projectile, wherein at least one interconnection is configured to allow a limited amount of relative movement between the plurality of electronic components.

The details of one or more implementations are set forth in the accompanying drawings and the description below. Other features and advantages will become apparent from the description, the drawings, and the claims.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an isometric view of a projectile including an ordnance portion and a communication apparatus;

FIG. 2 is a diagrammatic view depicting the use of the projectile of FIG. 1;

FIG. 3 is an isometric view of the projectile of FIG. 1 after deployment;

FIG. 4 is block diagram of the communication apparatus of the projectile of FIG. 1;

FIG. 5 is a diagrammatic view of the system board of the communication apparatus of the projectile of FIG. 1;

FIG. 6 is a partial cross-sectional view of the communication apparatus of the projectile of FIG. 1; and

FIG. 7 is a diagrammatic view of the power supply of the communication apparatus of the projectile of FIG. 1.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring to FIGS. 1 and 2, there is shown a projectile 10, including an ordnance portion 12 and a communication apparatus 14, that is configured to be launched from a launcher 16 (e.g., a handgun, a rifle, or a cannon, for example). Examples of projectile 10 include a bullet, a rocket propelled grenade, a dart, or an artillery shell, for example. In order to facilitate stable flight, projectile 10 is configured to rotate about its longitudinal axis 18 once launched. Alternative methods for stabilizing the projectile include: deployable fins 17 constructed out of e.g., spring steel or titanium that extend after leaving the launching barrel; or a Sabot 19 that encases the projectile and provides aerodynamic control surfaces. Typically, the rotation of projectile 10 about longitudinal axis 18 is achieved by incorporating rifling (i.e., one or more spiral grooves; not shown) into the inner surface of the barrel 20 from which projectile 10 is launched, which are engaged by the outer surface 22 of projectile 10. Accordingly, when projectile 10 is launched from launcher 16, as projectile 10 moves through barrel 20 in the direction of arrow 24, an interference fit is formed between projectile 10 and barrel 20, forcing the outer surface 22 of projectile 10 to engage the rifling on the inner surface of barrel 20, resulting in projectile 10 rotating (in the direction of either arrow 26 or arrow 28) about longitudinal axis 18.

As discussed above, projectile 10 is launched from a launcher (e.g., Barrett 82A1 sniper rifle 16) at various targets, such as: buildings 30, communications antenna 32; airplanes 34; tanks 36; and miscellaneous structures (e.g., stadium 38).

Referring also to FIG. 3, typically projectile 10 is configured to partially penetrate a target (e.g., tank 36) such that the communication apparatus 14 of projectile 10 is still visible, thus allowing projectile 10 to communicate with a remote device (to be discussed below). Concerning the structure of projectile 10, communication apparatus 14 is positioned at the rear of projectile 10 and ordnance 12 is positioned at the front of projectile 10. Accordingly, ordnance 12 absorbs the majority of the energy dissipated when projectile 10 impacts a target, thus shielding communication apparatus 14 from these potentially deforming and destructive forces.

As projectile 10 is designed to partially penetrate a target, the material from which ordnance 12 of projectile 10 is constructed varies depending on the intended target. For example, if projectile 10 is designed to imbed itself into a wooden structure (e.g., a structure in a terrorist training camp) or an aluminum structure (e.g., the vertical stabilizer of an fighterjet), the ordnance portion may be constructed of a relatively soft material, such as lead. However, if ordnance 12 is designed to imbed itself into armored plate, such as the plating used on tanks (e.g., an M1A1 tank) or armored personnel carriers (e.g., a Bradley fighting vehicle), ordnance 12 may be contracted of a sturdier material, such as depleted uranium. In other instances, a soft metal/thermoplastic-encased ceramic (e.g., silicon carbide), carbon fiber or hard metal (e.g., tungsten) pin 42 can be used to decelerate then affix the projectile to the target surface. For thinner metal surfaces (e.g., sheet metal bodies of automobiles or light trucks), a threaded screw-shaped penetration device (not shown) may be used to attach the projectile.

Additionally and as is known, the kinetic energy of an object in flight may be adjusted by varying the speed at which the object moves through the air. Accordingly, the powder charge used to propel projectile 10 into flight may be varied based on the material from which the intended target is constructed (e.g., the sturdier the target, the higher the impact velocity of the projectile). Range-limiting fins 44, as found in range-limited target ammunition (RLTA), may be utilized to control both the velocity and range of projectile 10 or cause it to fall out of flight at a predetermined distance from its launch point.

Referring also to FIG. 4, communication apparatus 14 includes a power supply 50 for providing power to communication apparatus 14. An example of power supply 50 is a model 4019-100 lithium battery manufactured by Electrochem Power Solutions Incorporated of Canton Mass. Depending on the type of communication to be performed by communication apparatus 14, one or more types of transmission or reception devices may be employed. For example, if communication apparatus 14 is to perform light-based communication, one or more light sources 52-59 may be employed. A typically example of light sources 52-59 is a model SMC 630 light emitting diode manufactured by Epitex Incorporated of Kyoto Japan. However, other forms of light sources may be utilized, provided they are capable of withstanding the acceleration and deceleration experienced by projectile 10.

Light sources 52-59 are each driven by transmitter 60. A typical example of transmitter 60 is a PIC12FG75 manufactured by Microchip Technology Incorporated of Chandler Ariz. For light-based transmission, transmitter 60 is configured to systematically activate light sources 52-59 so that a desired light pattern is achieved.

Referring also to FIGS. 5 and 6, light sources 52-59 are often configured in a circular pattern and light sources 52-59 are individually sequentially activated such that a sweeping light pattern is generated that repeatedly rotates about the perimeter of the circular pattern formed by the light sources. This in turn results in the generation of, in this example, eight discrete light pulses (e.g., light pulses 61-68) that are generated by light sources 52-59 respectively.

Alternatively, if enhanced illumination is desired, multiple light sources may be activated simultaneously. For example, light sources 52, 53 may be simultaneously activated, and then light source 52 may be deactivated at the same time that light source 54 is activated. Subsequently, light source 53 may be deactivated at the same time that light source 55 is activated, resulting in a sweeping light pattern in which two adjacent light sources are always activated. Alternatively still, non-adjacent light source pairs may be simultaneously activated, such as: light sources 52, 56; followed by light sources 53, 57; followed by light sources 54, 58; and so on.

Regardless of the manner in which light sources 52-59 are activated, the light pulses 61-68 (respectively) generated by light sources 52-59 are provided to a lens assembly 70, which is configured to shape the light pulses into a desired pattern. For example, if the pattern desired is a sweeping conical light pattern, a convex lens assembly 70 may be used, such that light pulses 61-68 are redirected to form diverging light pulses 71-78. Each of the diverging light pulses 71-78 is projected at a unique radial angle (with respect to the longitudinal axis 18 of projectile 10). For example, if eight light sources are evenly spaced about a circular pattern and a convex (or concave) lens assembly is used, the radial angles for diverging light pulses 71-78 would be 0°, 45°, 90°, 135°, 180°, 225°, 270°, and 315° respectively. As shown in FIG. 6, the longitudinal angle of a diverging light pulse (i.e., the angle between the longitudinal axis 18 and a diverging light pulse e.g., light pulse 71) varies based on the curvature of lens 70 and the point 80 (along the curvature) at which a light pulse (e.g., light pulse 61) strikes lens 70, such that the longitudinal angle increases as the curvature of the lens increases. Therefore, if light sources 52-59 are arranged in a linear pattern and the individual light sources are sequentially energized, the longitudinal angle of the diverging light pulses 71-78 will vary as the individual light sources are sequentially activated (as shown in FIG. 4). The light sources may be disposed radially around the perimeter of the projectile or by means of an array of reflective surfaces (mirrors), the light from the backward pointing light sources may be reflected in such as way as to direct out the sides of the projectile.

Depending on the application, light sources 52-59 are typically configured to provide light in the infrared spectrum (i.e., having a frequency of approximately 3×10¹²-4.3×10¹⁴ Hertz); the visible spectrum (i.e., having a frequency of approximately 4.3×10¹⁴-7.5×10¹⁴ Hertz), or the ultraviolet spectrum (i.e., having a frequency of approximately 7.5×10¹⁴-3×10¹⁷ Hertz).

In addition to light-based communication, communication apparatus 14 may be configured for RF communication. If configured for RF communication, transmitter 60 would be configured to facilitates such communications. For example, a modulator circuit (not shown) may be incorporated into transmitter 60 so that a data signal could be modulated onto a carrier signal. Additionally, an encryption circuit (not shown) may be incorporated into transmitter 60 so that the data signal may be encrypted prior to being transmitted. Additionally, if configured for RF communication, an antenna 82 is electrically coupled to the transmitter 60 so that the modulated signal 84 can be broadcast to the remote device (not shown). Concerning the type of data broadcast, a global positioning system (GPS) device 86 may be included so that longitudinal and latitudinal location data (concerning projectile 10) can be broadcast to the remote device (not shown). Additionally, a microphone 88 and/or a video camera 90 may be included to broadcast audio data and/or video data to the remote device.

In addition to broadcasting data (e.g., light pulses, GPS data, audio data and/or video data), communication apparatus 14 may be configured to receive data. If configured to received data, a receiver 92 is included that allows communication apparatus 14 to receive e.g., a light-based data signal 94 via a photoreceptor 96 (coupled to receiver 92) and/or an RF-based data signal 98 via an antenna 100 (coupled to receiver 92).

As power supply 50 stores a finite amount of energy, light-based data signal 94 and/or RF-based data signal 98 may include an encoded data signal (not shown) that energizes a portion of communication apparatus 14. For example, when initially launched, communication apparatus 14 may be configured such that upon launch and impact with a target (e.g., a terrorist safe house), transmitter 60 and light sources 52-59 are disabled and only receiver 92 and photoreceptor 96 are enabled. Assume that projectile 10 is being used to illuminate the target for destruction by a laser-guided bomb, and that the light sources are LED's that provide an IR guidance signal that the laser-guided bomb uses for tracking purposes. If the terrorist safe house is not going to be destroyed for one week, at some time just prior to the attack, an RF or light-based data signal may be transmitted to communications apparatus 14 instructing communication apparatus 14 to energize transmitter 60 and light sources 52-59, thus allowing power source 50 to conserve power until the point in time when it is required to transmit the IR guidance signal (as opposed to the entire week prior to the attack). Further, as the IR guidance signal may be seen using night vision goggles, it is desirable to limit the transmission time, as transmitting the signal too early may result in projectile 10 being discovered and destroyed.

As stated above, projectile 10 is designed to partially penetrate the target at which it is shot so that communication apparatus 14 can communicate with a remote device (not shown). Therefore, communication apparatus 14 must be able to withstand the acceleration experienced by projectile 10 at the time of launch, and the deceleration experienced by projectile 10 at the time of target impact.

Accordingly, the individual components (e.g., transmitter 60) of communication apparatus 14 are typically constructed using surface-mount component technology, in which the individual components actually make contact with and are soldered to the system board 102 with flexible conductive epoxy and inherently flexible solders. Therefore, there is very little gap between the lower surface of the component and the upper surface of the system board, and the likelihood of damaging the component and/or connections between the component and the system board (when the projectile is launched and/or impacts the target) is reduced because the components are allowed a certain amount of movement upon impact. Further, system board 102 may be constructed of a resilient material (e.g., fiberglass reinforced plastic) that is less prone to shattering and/or fracturing. Component to component wiring and component to board wiring, other than the surface mounted attachments, is accomplished using loops of malleable gold wire and ultrasonic welded “wedge type” wire bonds. After surface mount and wire bonding the entire circuit is encapsulated in a semiflexible epoxy such as Summers Optical P-92.

Additionally, system board 102 is typically positioned such that the plane of the system board 102 is orthogonal to the longitudinal axis 18 of projectile 10. Typically, the housing 104 of communication apparatus 14 includes a mounting structure 106 (that is orthogonal to the longitudinal axis 18 of projectile 10) onto which system board 102 is mounted. Typically, system board 102 is constructed such that the lower surface of system board 102 is flat, thus allowing the lower surface of the system board 102 to make contact with mounting structure 106 (thus eliminating any gaps between system board 102 and mounting structure 106.

Referring also to FIG. 7, in order to enhance the shelf life of power supply 50 within projectile 10, power supply 50 typically includes a use detection apparatus 150 for activating the power supply after the occurrence of a use event (e.g., projectile 10 being launched at a target or projectile 10 striking a target).

Typically, power supply 50 is a battery pack that generates electricity due to an electrochemical reaction between at least two components 152, 154. Use detection apparatus 150 may be a membrane that separates the two components until the occurrence of the use event, at which point the membrane ruptures and the electrochemical reaction begins and electricity is generated. For example, membrane 150 may be constructed of Mylar and positioned between two pins 156, 158, one pin 156 being positioned toward the front of projectile 10 and the other pin 158 being positioned toward the rear of projectile 10. Accordingly, during an acceleration event (i.e., a launch), membrane 150 is deflected rearward (into position 160), striking pin 158, rupturing membrane 150 and allowing the various components 152, 154 of power supply 50 to interact. Alternatively, during a deceleration event (i.e., the projecting striking a target), membrane 150 is deflected frontward (into position 162), striking pin 156, rupturing membrane 150 and allowing the various components 152, 154 of power supply 50 to interact.

Typical examples of power supply 50 include a zinc air (Zn/O₂) battery pack, in which the components separated by membrane 150 include zinc, carbon and air, such that electricity is generated due to an electrochemical reaction between the zinc/carbon and the air.

Another example of power supply 50 includes a lead acid (Pb/H₂SO₄) battery pack, in which the components separated by membrane 150 include lead, lead oxide and sulfuric acid, such that electricity is generated due to an electrochemical reaction between the lead/lead oxide and the sulfuric acid.

Additionally, power supply 50 may be an alkaline battery pack, in which the components separated by membrane 150 include zinc, manganese dioxide and potassium hydroxide, such that electricity is generated due to a electrochemical reaction between the zinc/manganese dioxide and the potassium hydroxide.

While power supply 50 is described above as including a membrane that is ruptured by striking one or more pins, other configurations are possible. For example, membrane 150 may be configured such that the membrane is incapable of withstanding the gravitational load of projectile launch and/or target strike and, therefore, ruptures upon the occurrence of one of these events without striking a pin or any other device. Alternatively, a normally-closed microswitch might be incorporated into power supply 150 that, upon the occurrence of a use event (i.e., a launch or an impact), the microswitch is closed and the communication apparatus is energized.

While the system is described above a being configured such that a sweeping light pattern is generated that follows a circular pattern, other configurations are possible. For example, all of light sources 52-59 may be configured (via transmitter 60) to be simultaneously activated and deactivated. Further, light sources 52-59 need not be configured in a circular pattern, as other configurations are possible. For example, light sources 52-59 may be configured in a square, rectangular, linear, x-shaped, or triangular pattern.

While the system is described above as including an active communication apparatus, a passive communication apparatus may also be employed. For example, communication apparatus 14 may include a non-powered retroreflector (not shown) that reflects an external light source that is used to illuminate the retroreflector. For example, the external light source may be a laser light source that is configured to strike the retroreflector (i.e., the passive communication apparatus), such that a portion of the laser light is reflected to an external device (e.g., the laser guidance system of a missile or smart bomb). As with the active communication apparatus described above, the passive communication apparatus must be designed to withstand the acceleration and deceleration experienced by projectile 10.

A number of implementations have been described. Nevertheless, it will be understood that various modifications may be made. Accordingly, other implementations are within the scope of the following claims. 

1. A projectile comprising: an ordnance portion configured to impact a target; and a communication apparatus positioned rearward of the ordnance portion; wherein the projectile is configured to rotate about and travel along a longitudinal axis after launch.
 2. The projectile of claim 1 wherein the ordnance portion includes a bullet.
 3. The projectile of claim 1 wherein the ordnance portion includes a grenade.
 4. The projectile of claim 1 wherein the ordnance portion is configured to partially penetrate a target such that at least a portion of the communication apparatus is remotely visible.
 5. The projectile of claim 1 wherein the ordnance portion is constructed of an energy absorbing material.
 6. The projectile of claim 5 wherein the energy absorbing material is a thermoplastic.
 7. The projectile of claim 5 wherein the energy absorbing material is a soft metal.
 8. The projectile of claim 5 wherein the energy absorbing material encases a penetration device.
 9. The projectile of claim 8 wherein the penetration device is constructed of a material chosen from the group consisting of: a ceramic material; a carbon fiber material; and a hard metal.
 10. The projectile of claim 9 wherein the ceramic material is silicon carbide.
 11. The projectile of claim 9 wherein the hard metal is tungsten.
 12. The projectile of claim 8 wherein the penetration device is a threaded penetration device configured to attach the projectile to sheet metal.
 13. The projectile of claim 1 further comprising one or more deployable fins that extend after leaving a barrel from which the projectile is launched.
 14. The projectile of claim 1 further comprising one or more range-limiting fins.
 15. The projectile of claim 1 further combining a sabot for encasing the projectile at the time the projectile is launched.
 16. The projectile of claim 1 further comprising a power supply for providing energy to at least the communication apparatus.
 17. The projectile of claim 16 wherein the power supply includes a use detection apparatus for activating the power supply after the occurrence of a use event.
 18. The projectile of claim 17 wherein the use event is chosen from the group consisting of: a launch event, and an impact event.
 19. The projectile of claim 17 wherein: the power supply is an electrochemical battery pack that generates electrical energy due to an electrochemical reaction between at least two components; and the use detection apparatus includes a membrane that separates the at least two components until the occurrence of the use event.
 20. The projectile of claim 19 wherein: the battery pack is a zinc air (Zn/O₂) battery pack; the at least two components include zinc, carbon and air; and the membrane separates the zinc and carbon from the air.
 21. The projectile of claim 19 wherein: the battery pack is a lead acid (Pb/H₂SO₄) battery pack; the at least two components include lead, lead oxide and sulfuric acid; and the membrane separates the lead and lead oxide from the sulfuric acid.
 22. The projectile of claim 19 wherein: the battery pack is an alkaline battery pack; the at least two components include zinc, manganese dioxide and potassium hydroxide; and the membrane separates the zinc and the manganese dioxide from the potassium hydroxide.
 23. The projectile of claim 1 wherein the communication apparatus includes a reception device for receiving energy from a remote source.
 24. The projectile of claim 23 wherein: the energy received is RF energy; and the reception device includes an antenna.
 25. The projectile of claim 23 wherein: the energy received is infrared energy; and the reception device includes a photoreceptor.
 26. The projectile of claim 23 wherein the energy received includes an encoded data signal configured to energize at least a portion of the communication apparatus.
 27. The projectile of claim 26 wherein the energized portion of the communication apparatus includes a transmission device for transmitting energy to a remote receiver.
 28. The projectile of claim 1 wherein the communication apparatus includes a transmission device for transmitting energy to a remote receiver.
 29. The projection of claim 28 wherein: the transmitted energy is RF energy; and the transmission device includes an antenna.
 30. The projectile of claim 28 wherein: the transmitted energy is infrared energy; and the transmission device includes one or more light emitting diode.
 31. The projectile of claim 30 wherein the transmission apparatus further includes a lens assembly for refracting the infrared energy transmitted from the one or more light emitting diodes.
 32. The projectile of claim 31 wherein the lens assembly is a convex lens assembly.
 33. The projectile of claim 31 wherein the lens assembly is a concave mirror assembly.
 34. The projectile of claim 30 wherein the one or more light emitting diodes includes a plurality of light emitting diodes, the transmission device further including a driver circuit for sequentially exciting each of the one or more light emitting diodes.
 35. The projectile of claim 34 wherein the transmission apparatus further includes a lens assembly configured to: project the infrared energy transmitted from a first of the plurality of light emitting diodes at a first radial angle; and project the infrared energy transmitted from a second of the plurality of light emitting diodes at a second radial angle.
 36. The projectile of claim 34 wherein the transmission apparatus further includes a lens assembly configured to: project the infrared energy transmitted from a first of the plurality of light emitting diodes at a first longitudinal angle; and project the infrared energy transmitted from a second of the plurality of light emitting diodes at a second longitudinal angle.
 37. The projectile of claim 34 wherein the transmission apparatus further includes a lens assembly configured to: project the infrared energy transmitted from a first of the plurality of light emitting diodes at a first longitudinal angle and a first radial angle; and project the infrared energy transmitted from a second of the plurality of light emitting diodes at a second longitudinal angle and a second radial angle.
 38. The projectile of claim 1 wherein the communication apparatus is a passive communication apparatus.
 39. The projectile of claim 38 wherein the passive communication apparatus includes a retroreflector.
 40. The projectile of claim 1 wherein the communication apparatus is an active communication apparatus.
 41. The projectile of claim 40 wherein the active communication apparatus is configured to substantially withstand the acceleration associated with launching the projectile from a launcher and the deceleration associated with the projectile striking the target.
 42. The projectile of claim 41 wherein the active communication apparatus includes one or more surface mount electronic components mounted on a shock-resistant system board.
 43. The projectile of claim 40 further comprising one or more interconnections for electrically coupling a plurality of electronic components internal to the projectile, wherein at least one interconnection is configured to allow a limited amount of relative movement between the plurality of electronic components.
 44. The projectile of claim 42 wherein the active communication apparatus includes a system board for mounting one or more electronic components, wherein the system board is positioned within a plane that is essentially orthogonal to the longitudinal axis of the projectile.
 45. The projectile of claim 42 wherein the communication apparatus includes an essentially planar mounting structure that is essentially orthogonal to the longitudinal axis of the projectile, wherein the essentially planar mounting structure is configured to receive a system board containing one or more electronic components.
 46. The projectile of claim 1 wherein an exterior surface of the projectile is configured to engage an interior surface of a barrel from which the projectile is launched.
 47. The projectile of claim 46 wherein the interior surface of the barrel includes spiral rifling that engages the exterior surface of the projectile and rotates the projectile about the longitudinal axis after launch.
 48. A projectile comprising: a communication apparatus including a transmission device for transmitting energy to a remote receiver; and an ordnance portion positioned forward of the communication apparatus and configured to partially penetrate a target such that at least a portion of the communication apparatus is remotely visible; wherein the projectile is configured to rotate about and travel along a longitudinal axis after launch.
 49. A projectile comprising: a communication apparatus including a transmission device for transmitting energy to a remote receiver, and a receiving device for receiving energy from a remote transmitter; and an ordnance portion positioned forward of the communication apparatus and configured to partially penetrate a target such that at least a portion of the communication apparatus is remotely visible; wherein the projectile is configured to rotate about and travel along a longitudinal axis after launch, and one or more interconnections for electrically coupling a plurality of electronic components internal to the projectile, wherein at least one interconnection is configured to allow a limited amount of relative movement between the plurality of electronic components. 